One of the other issues we have is that of file sharing - on her old windows laptop, we had a shared folder for images - when I copied the photos off our camera, I simply copied them over to her shared folder, so they were ready to go for her. On her new MacBook, I've SMB sharing setup on her images folder (as well as AFP), but I'm not able to connect to her "share" from my windows laptop. There's certainly a way to do this (or at least I think there should be), but it for sure doesn't "just work".
also, I just have to say that Finder (IMHO) just plain sucks. When I've navigated to a sub directory in an app (say via a "Open" dialog), it will remember that location for the next time it is opened. However, let's say you click "Open" again - you'll be dropped back in where you were (which is fine), but you have no way of going "up" a directory any more (since it's not in the current history). The only thing to do is change file views at this point so you can see the entire hierarchy, then click where you need go. I know how to do this, but my wife still hates it.
She also gets frustrated when an app is already running (she doesn't know that), and she clicks on the icon in the dock and it does not come to the front of other windows. She thinks the app is not responding, and gets frustrated.
I can go on if you want more...
Thanks!